Mass of one object remains same, but of another object mass is increased 3 times than before and their distance is also increased three times. Then will the gravitational force increase or decrease?

If same force is exerted on a substance and area increases then, will the pressure increase or decrease?

Show that , if the range of a voltmeter is increases n times, its resistance also increases n times.

If the radius of a circle be increased by 3 times, then how many times its circumference will be increased ?

If the radius of base and height of a right circular cone be increased by 3 times , then the volume of the cone will be increased by 27 times.

For a reaction A to B , the rate of reaction becomes twenty seven times when the concentration of A is increased three times. What is the order of the reaction?

A body of mass M is divided into two parts -one of mass m and another of mass (M-m) . The two pieces are kept at a distance . What should be the value of the ratio m/M , so that the gravitational force of attraction between the two piece will be the maximum ?

When a pendiulum is taken to the moon, explain whether the time period will increase or decrease.

If the current sensitivity of a moving coil galvanometer is increased by 20% , its resistance also increased by 1.5 times. How will the voltage sensitivity of the galvanometer by affected?

Select the correct option stating the reason for your choice. If the mass of the earth remains the same, but its diameter is decreased by 1% the value of the acceleration due to gravity on the surface of the earth (i) remains the same (ii) decreases (iii) increases.